Ventilator.



. e. R. SIBFKEN.

VBNTILATOR.

A PPLIOATION FILED JUNE 13, 1910.

Patented May 14, 19`12.

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' enonen n. smrxnn, or NEW Yoan., N. Y.

vENrrLamm A Specification of Letters Patent. appueaaon mea June 13,11910. serm N0. 566,572.

To all lwhom. et may concern Be it known that I, GEORGE R. Smmn, a

citizen of the United States, and a resident' of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Ventilator, of which the following is a full,

i clear, and exact description.

This invention relates to ventilators for use with buildings, railroads carsA and other structures, and has reference more particularly to a ventilatorvin which a bodily movable valve is employed to regulate the en-A ,trance of air into the structure through the ventilator. The invention also relates to the grouping of a plurality of bodily movable valves in a series, the valve umts of. which are adapted to operate at diierent pressures,

so that the quantity of air entering through the ventilator will be uniform, regardless of wind velocity atthe outside of the venti-V latol'.

The object ofthe invention is. to provide a simple, inexpensive and durable ventilator which can be installed at windows or other structural openings in buildings, railroad cars and the like, which cuts olf -a minimum of light, the operation of which willnot be a affected by accumulations of dust and the i :from entering the structureto be ventilated,A

- described hereinafter' and like, which is practically noiseless in o eration, which will prevent an excess o air regardless of the wind velocity vor air pressure at the outside, and which `can be con-.-

structed. in dii'erent forms and proportions, t'o adapt it for various purposes.

The invention consists in the construction and combination of parts tol be more lfully particularly set forth in the claims.

Reference is to be had to the, accompanying drawings forming a part of this specication, in which similar characters of reference indicate corresponding parts in `all the views, and in which- Fi ventilator constituting an embodiment of my invention showing the ventilator o n a. window frame; Fig. 2 is an enlarged transverse section of the window and the ventilator, showing one of the ventilator valves; Fig. 3 isa similar view showin a valve oi` modiied Lforni; Fig. 4 is a sunilar view showing a valve of further modified form; Fig. 5 is a similar view showing another form ofvalve; Fig. 6 isa like view showgure 1 Ais a longitudinal sectionof a ing a further modified formof the valve;

Patented May 14., 191g.

and Fig. v7 isfa similar view showing an` v other modification of theV valve.

Before proceeding to a more detailed explanation of my invention, it should be clearly understood that while I have illustrated Vfor example, in the accompanyingdrawings, a form of the ventilatorwhich is mounted at the Vlower. art of a window frame, the device 'can e arranged to be mounted at other parts of a room or other structure to be ventilated.- The ventilator may consist of any desired number of units', each of which includes a valve for reo'ulatingthe iow of air through the ventllator into the room. The number of theseunits may depend upon special conditions or individual preference. Ifso desired, a single unit may be employed. I have found that it is ossible to overcome certain 4diiiicult'ies foun 1n various present types of ventilators, by employing a valve which is movable bodily, that is, movable in parallelism, as,

distinguished from a hin ed or pivoted valve. The bodily movabe valve is best mounted to move. in a substantially vertical direction, and its normal osition is a horizontal one.

small height and it thereby cuts o little Consequent y, the ventilator 4 casingv can be constructed of comparatively light when positioned in a window frame.

By obviatin hinges or pivots for the valve it is possibe to avoid the difliculty frequently caused by accumulations of dust, which tend to clog the hinges, and also to overcome the lpossibility of havin the hinges rusted by moisture. Such con itions naturally interfere with the proper o ra-v tion of the ventilator, and tend to ren er it noisy and uncertain. Certain of the details of construction shown for example herewith, form no part of the invent-ion and can be varied in accordance with individual preference and special conditions, without departing from the underlying spirit of the invention.

Referring more particularly 'to the drawings, I have shown 1n Fig. 1 awindow frame 10, having a sill 11 and a lower sash 12. The ventilator casing 13 is positioned upon the sill, at the inside of the window, so that the sash can move freely at the outside of the casing. The casing has therein a plurality of partitions 14, which divide it into substantia'lly horizontal passages 15. These are closed at the inner ends of the casing back atdii'erent successive wind 16. The outside wall-17 of thel casing has a plurality of inlet openings 18 of circular or othersuitable form, and each covered by a wire gauze or other screen 19. When the pose of plreventing the entrance of dust, insects an the like into the room from the outside.

A cross bar 24 is positioned in each of the openings 21, below the screen 23, and above the valve seat 22'. Each has a. valve stem 25 depending therefrom and secured in an opening of the cross, bar, by suitable fianges 26. At'the lower end it-has' a laterally extendedfiange 27 constituting a stop. A conical valve member 28 having a central hub or sleeve 29 is movabl mounted by means of the latter, upon t e valve stem. The valve member has a slightly. inwardly inclined rim 30.' When the valve is raised toits highest position it will rest at the valve seat 22 to close the passage through the casing and to prevent the entrance of air into the room. The valve tends to oat upward under the iniuenceof air pressure vat the under side. If the air pressure is such that4 it is insufficient to overcome the weight of Vthe valve and to raise it, the passage will refmain unobstructed. If the'air ,pressure exceeds a predetermined wei ht, thevalvefwill at once moveupward bo ily to ji ts,jclosed position. In a ventilator comprising a series of valves the latter are designed'to operate t ressures. This may be accompllshed inseveral ways. v As shown for example, -in Fig. 1, I emplo `v'a series of' valves 28,28*z 28h, 28 etc., of ferent, increasing-wel hts. an a1r ressure or a win velocity whlch w will not necessarily operate to close the rema1n1n valves. Consequently, 'the-venti- Ilator w1ll automatically regulate the quant1ty of air entering the room, the number. of .va ves remaining open dependinguponzthe pressure of the air itself. The. uantity'of. .air enteringthe room is thus form. c The valve members of a -series caribe arranged to operate at diiferentfair pressures, by the use ofsprings 31,"as shownin- -F1 3. The vvalve members may'thustbeiof fumform weight and the springs 31g1nay'be` of successively increasin remaining elements of t e ventilator may."

stren be unchanged.

5 4 I" have shown a' l" f -onsequentl openings of. which are covered by screens close t e first of the valves or the second,` 4

-tion .crosssectiom t constitutes a'valve seat for the conical .valve1 50,which has rigid therei Y.

120 ving'extension52'is positioned upon the top' of the-.casing properand has 1n the rear wall, openings" 53 provided `with-"screens 54.. f ,Above the openings 53 the casing'extension 1 Y l has annular members 5 5 .simi1ar `to the yme`m. bers 49 and o sitioned above. the same. Aff secondary v ve or diskmember56 is adapt` ed tofseat'u on each'member.'tiand-gig; at .thelupperlend of-a valve latter' having. 5 '1 "for- 2" fn' l ways s. The

o f vvalve which a cross bar 32 isemployed iii theop'ening 21. I The cross baris provided with a uide sleeve 33 vin which a valve 34 having atV the upper end ahead 35, 1s mounted to move. The'lvalv'e stem at the lower end carries a valve member 36, and

has a flanged end 37 which is soldered or l otherwise secured at a central Vopening of the Avalve member. 'The spring 31 shownin Fig.

3 tends .to resist the. closing-.oftheA valve and acts as a4 'cushion or bulier'to render the operation silent. .If so desired the valve seat 22 may/have 'an annular strip l38 of I rubber, felt," or other cushion materialse-l cured thereon, against which the valve can seat, and whichserves to render the action of the valve'noiseless. i

In Fig. 5 I have shown a modified form of valve in vwhich'a stem, 39 is arranged iny the passage 15 under the .opening 21 and concentric therewith. The valve 40 ias a central, downwardlyfdsposed sleeve 41 by means of which it is movably mounted upon the stem 39, and is adapted to oat upwardly against the valve seat. .The engagement ofthe center of the. valve wit-hithe up er end of the stem 39 limitsthe.. downwar movefopening v21 "and concentric therewith. The valve 43 has a central, downwardly disposed stem 44, which is movably received in the sleeve 42. .The engagement 'of ithe upper end ofthe vsleeve with the valve limits the downward movement of the latter.

seat to 'close"thea1r passage.

valves illustra'tedinl` Fi 2,; 35 4, 5 and 6' theairjenterin jtlr'oug vthef passage and' carrying' withvl tdust, Acan not deposit the dust at parts of the'valves or the guides,

where it -could accumulate and tend to l hinder theoper'ation of thel valve. i In Fig. 7 I- .have illustrated a diferen form of ventilator, which has a casing`45 guide@ vsleeve 42 in the-j' passage -15 underneat the 95 provided with inlet passages 46, the .outer Awith afstem 5 1 extending upwardly. A casi the. purpose. The air entering the ventilator casing exerts an upward pressure both upon the valve members 50 and the auxiliary 'valve member 56, to raise the valvesand to seat them against the member A4:9, to close the passages. :By doubling the effective areasy of thevalve members they can Ybe vrendered sensitive to extremely light' air' pressures.

Having thus described my invention, I claim as new, and desire to secure by Letters Patent:

1. A ventilator having a. casing provided with a pluralit of\ independent air passages, and a y p urality of .valve members, each arranged to move in one of said passages and adapted to close .the same under the influence of airpressure, each .of said valve members being adapted to operate at an air pressure diiierent from that required to operate another ef-said valve members.

.2. -A ventilator comprising a casing havinga plurality of inlet openings, independent passages2 each 'communrcatlng with one of said. openlngs, each of said passages having therein a valve seat, and a valve member in each of said'passages'and adapted to rest against .said seat to close its passage, each of said valve members bein adapted to operate at an -air pressure di erent from' .that required to operate another of said valve members.

3. A ventilator comprising a casing hav.

`to move from an. open Atoward a closed position, to regulate the amount of air entering through said casing, said valve members being adapted to 'close under the influence of air pressure, each of said valve members lbeing adapted to operate at an air pressure diierent from that required to operate another of said valve members. e

5. A ventilator comprising a casing having a passage therein, and a movable valve in said passage, said valvehaving a tubular stem extending downwardly therefrom, said casing having associated therewith a guide received in said stem,.said stembeing open at the lower end only. .v

- In testimony whereof I have signed my name to this specication in the presence of two subscribing witnesses.

GEORGE n. siEFKEN. Witnesses:

JOHN K. BR'AnHvoeEL, lPHILIP D.-RoLLHAUs.

maar 2.-:- 

